Automatic draining device

ABSTRACT

An automatic draining device includes a sewer pipe and an upper pressing part. The upper pressing part has a sewer hole communicating with the sewer pipe, a movable piston part is arranged in the sewer hole, the piston part is connected with a transmission part, and an electric actuator is further arranged outside the sewer pipe; the electric actuator is connected with a power supply component; and the electric actuator drives the piston part to slide in the sewer hole to control the sewer hole to be closed or opened, therefore, opening and closing states of the sewer hole may be controlled by a switch, and using is convenient and healthy.

CROSS REFERENCE TO TILE RELATED APPLICATIONS

This application is based upon and claims priority to Chinese Patent Applications No. 202210881393.6, filed on Jul. 25, 2022; No. 202221920393.4, filed on Jul. 25, 2022; No. 202221930786.3, filed on Jul. 25, 2022; No. 202222787293.5, filed on Oct. 21, 2022; and No. 202221927621.0, filed on Jul. 25, 2022; the entire contents of which are incorporated herein by reference.

TECHNICAL FIELD

The disclosure herein relates to the field of wiring harness bathroom hardware fitting, in particular to an automatic draining device.

BACKGROUND

Washbasins are necessary sanitary facilities for the daily household and hotel restrooms. There is usually a piston at a drain outlet of a bottom of the washbasin for blocking off the drain outlet, so that a certain amount of water is stored in the washbasin for washing or cleaning towels and other items when necessary, after use, it is necessary to reach a hand into the accumulated water in the washbasin and open the piston at the bottom of the washbasin to let the accumulated water drain out, however, the accumulated water in the washbasin becomes sewage after use, and at the moment, reaching the hand into the washbasin is not only inconvenient, but also unhealthy.

SUMMARY

The present disclosure aims at solving one of the technical problems in the above technology at least to a certain extent. Therefore, the present disclosure aims at providing an automatic draining device. The device enables a user control opening and closing states of a sewer hole through a switch, so that accumulated water in a washbasin can be drained, there is no need to reach a hand into the accumulated water to press a piston at a drain outlet, and use is convenient and healthy.

In order to reach the above objective, in an aspect, an embodiment of the present disclosure provides an automatic draining device. The automatic draining device includes a sewer pipe having a thread on an outer side wall at one end, one end of the sewer pipe is connected with an upper pressing part through a thread, the upper pressing part is arranged in a drain outlet of a washbasin and is hermetically connected with the drain outlet of the washbasin, the upper pressing part has a sewer hole communicating with the sewer pipe, a piston part is arranged in the sewer hole, the piston part is movably connected with an inner wall of the sewer hole, the piston part is connected with a transmission part, an electric actuator is further arranged outside the sewer pipe, the electric actuator is connected with a power supply component, the electric actuator has a stroke outputting part, the stroke outputting part is connected with the transmission part through a connecting part, the power supply component is used for providing a working current for the electric actuator, the electric actuator works under the drive of the current and outputs a working stroke through the stroke outputting part, the working stroke is then outputted to the transmission part through the connecting part, the piston part is connected with the transmission part slides in the sewer hole along with the working stroke, the piston part slides to a bottom end of the stroke, enters the sewer hole, and completely seals the sewer hole, the sewer hole is opened after the piston part slides away from the bottom end of the stroke, and water in the washbasin enters the sewer pipe through the sewer hole and is drained out.

According to the automatic draining device of the embodiment of the present disclosure, the device uses an electric device to drive the piston part to slide in the sewer hole, so that automatic drainage of the washbasin is achieved. The user only needs to start the electric device through the switch to drain out the accumulated water in the washbasin after using the washbasin and needing to drain the water, there is no need to reach the hand into the accumulated water to press the piston at a drain outlet, and therefore, it is more convenient and healthier.

In addition, the automatic draining device provided according to the above embodiment of the present disclosure may further have the following attached technical features,

Optionally, the piston part linearly slides in the sewer hole in an axial direction.

Further, the connecting part is simultaneously connected with the stroke outputting part and the transmission part, and converts the working stroke outputted by the stroke outputting part into a linear stroke in the axial direction of the sewer hole.

Optionally, a penetrating connecting hole is formed in a side wall at one end where the sewer pipe is connected with an upper pressing plate, the connecting part is located in the connecting hole, the transmission part is connected to one end of an inner side of the connecting part, and the stroke outputting part is connected to one end of an outer side of the connecting part.

Further, a transmission channel used for accommodating the transmission part is further arranged in the sewer pipe, the transmission channel communicates with the connecting hole, and the transmission part slides in the transmission channel in an axial direction and is hermetically connected with an inner wall of the transmission channel.

Optionally, the power supply component includes a power supply and a power supply management unit, the power supply management unit is connected with the power supply, the power supply management unit manages a current outputted by the power supply to control a working state of an electromagnetic push rod, and then control the opening and closing states of the sewer hole.

Further, the power supply management unit has a control switch, and the control switch controls a working state of the power supply management unit.

Optionally, the electric actuator is an electric screw rod mechanism or an electromagnetic push rod or a motor; when the electric actuator is the electric screw rod mechanism, the stroke outputting part is a screw rod; when the electric actuator is the electromagnetic push rod, the stroke outputting part is a push rod; and when the electric actuator is the motor, the stroke outputting part is a worm.

Further, when the electric actuator is the electric screw rod mechanism, a gear is fixed to the screw rod, and the gear meshes with a rack arranged on the transmission part.

Specifically, when the electric actuator is the electromagnetic push rod, the push rod is arranged in a coil former in a penetrating mode, an electromagnetic coil is wound on the coil former, the electromagnetic coil is connected with the power supply component through a wire. and the electromagnetic coil generates a magnetic force after being electrified, and then drives the push rod to slide in the coil former in the axial direction.

Further, a permanent magnet is further fixed to the push rod, the permanent magnet is further provided with metal plates on two sides of the push rod in a sliding direction respectively, the metal plates are located at two ends of the stroke corresponding to the permanent magnet, and when the push rod slides, the permanent magnet fixed to the push rod slides between the two metal plates.

Further, the electromagnetic push rod is further provided with a reset spring, and the push rod is arranged in the reset spring in a penetrating mode.

Optionally, when the electric actuator is the motor, the connecting part is a thumb wheel mechanism.

Optionally, the thumb Wheel mechanism includes a thumb wheel and a shifting tooth part fixed to the transmission part, one side of the thumb wheel meshes with the worm, the other side in an axial direction of the thumb Wheel has at least one protrusion portion, the shifting tooth part has a shifting tooth matched with the protrusion portion, and when the protrusion portion rotates under the drive of the motor, the protrusion is in touch with the shifting tooth from one side and pushes the shifting tooth to move upwards or downwards.

Further, the motor forward or reversely drives the worm to drive the protrusion portion to rotate, so as to push the shifting tooth to move upwards or downwards.

Further, the motor is installed with a driving gear, the thumb wheel mechanism has a worm gear, the worm has a driven gear, the driving gear meshes with the driven gear, and the worm meshes with the worm gear.

The attached aspects and advantages of the present disclosure will be partly given in the description below, and part will become apparent from the description below, or will be learned through the practice of the present disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of an automatic draining device according to Embodiment 1 of the present disclosure.

FIG. 2 is a section view of an automatic draining device shown in FIG. 1

FIG. 3 is an explosive view of an automatic draining device shown in FIG. 1 .

FIG. 4 is a schematic diagram of a connecting structure of a piston part, and a transmission part in FIG. 3 .

FIG. 5 is an explosive view of a connecting structure of a piston part and a transmission part in FIG. 4 .

FIG. 6 is a cross-section diagram of a sewer pipe in FIG. 2 .

FIG. 7 is an explosive view of an electromagnetic push rod in FIG. 3 .

FIG. 8 is an explosive view of an automatic draining device according to Embodiment 2 of the present disclosure.

FIG. 9 is a schematic diagram of a connecting structure of a piston part and a transmission part in FIG. 8 .

FIG. 10 is an explosive view of a connecting structure of a piston part and a transmission part in FIG. 9 .

FIG. 11 is a schematic diagram of a connecting structure of a piston part and a transmission part according to Embodiment 3 of the present disclosure.

FIG. 12 is a schematic structural diagram of an automatic draining device according to Embodiment 4 of the present disclosure.

FIG. 13 is an explosive view of an automatic draining device shown in FIG. 12 .

FIG. 14 is a schematic diagram of a piston, a transmission part, a thumb wheel mechanism and a motor included in FIG. 13 .

FIG. 15 is a schematic diagram of a transmission part, a thumb wheel mechanism and a motor included in FIG. 12 .

DETAILED DESCRIPTION OF THE EMBODIMENTS

Embodiments of the present disclosure are described in detail below, examples of the embodiments are shown in accompanying drawings, and identical or similar reference numbers throughout indicate identical or similar elements or elements with identical or similar functions. The embodiments described below by reference to the accompanying drawings are illustrative and are intended to explain the present disclosure and are not to be constructed as limitations on the present disclosure.

In order to better understand the above technical solutions, the exemplary embodiments of the present disclosure will be described in detail below by reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure may be implemented in various forms but is not limited by the embodiments illustrated here. Rather, these embodiments are provided for understanding the present disclosure more thoroughly, and the scope of the present disclosure may be completely conveyed to those skilled in the art.

An automatic draining device provided by the present disclosure is described below in detail in conjunction with FIG. 1 to FIG. 15 .

Embodiment 1

FIG. 1 to FIG. 7 schematically shows a washbasin automatic draining device according to an implementation of the present disclosure, the device includes a sewer pipe 2 having a thread on an outer side wall of one end, and one end of the sewer pipe 2 is connected with an upper pressing part 3 and a lower pressing part 4 through a thread respectively.

The upper pressing part 3 is arranged in a water outlet of a washbasin. The upper pressing part 3 and the lower pressing part 4 are screwed together and then clamp a bottom of the washbasin from both up and down directions, so as to achieve sealing connection with the water outlet of the washbasin.

In order to facilitate screwing the lower pressing part 4, in the embodiment, the lower pressing part 4 consists of a first lower pressing part 41 and a second lower pressing part 42.

The upper pressing part 3 has a sewer hole 31 communicating with the sewer pipe 2. A piston part 1 is arranged in the sewer hole 31.

The piston part 1 is movably connected with an inner wall of the sewer hole 31, and is in sealing with the inner wall of the sewer hole 31 through a sealing ring 11. A lower portion of the piston part I is connected with a transmission part 5.

An electric actuator 6 is further arranged outside the sewer pipe 2. The electric actuator 6 is connected with a power supply component 7. The electric actuator 6 has a stroke outputting part 61. The stroke outputting part 61 is connected with the transmission part 5 through a connecting part 8.

The power supply component 7 is used for providing a working current for the electric actuator 6.

The electric actuator 6 works under the drive of the current and outputs a working stroke through the stroke outputting part 61, and the working stroke is then outputted to the transmission part 5 through the connecting part 8, and the piston part 1 connected with the transmission part 5 slides in the sewer hole 31 along with the working stroke.

The piston part 1 slides to a bottom end of the stroke, enters the sewer hole 31 and completely seals the sewer hole 31, the sewer hole 31 is opened after the piston part 1 slides away from the bottom end of the stroke, and water in the washbasin enters the sewer pipe 2 through the sewer hole 31 and is drained out.

In the present embodiment, the stroke outputting part 61 is fixedly connected with an outer side wall of the sewer pipe 2.

The power supply component 7 includes a power supply 71 and a power supply management unit 72. The power supply management unit 72 is connected with the power supply 71, for managing the current outputted by the power supply 71 to control a working state of the electric actuator 6, and then control the opening and closing states of the sewer hole 31.

In the present embodiment, the power supply 71 is a battery case capable of being installed with dry cells or rechargeable batteries or power banks and other frequently-used power supplies. In some other embodiments, the power supply 71 may further be a charger and other voltage conversion devices connected with an electric supply.

The power supply management unit 72 has a control switch, and the control switch controls the working state of the power supply management unit 72. The control switch may be a key switch, an inductive switch or a remote control. The control switch may be installed on a wall space, on a side edge of a washbasin or on the ground as required, and may further be installed below the washbasin for sensing feet of a user, so as to achieve an effect of turning on by stretching the feet.

As shown in FIG. 5 , the piston part 1 linearly slides in the sewer hole 31 in the axial direction. The connecting part 8 is simultaneously connected with the electric actuator 6 and the transmission part 5, and converts the working stroke outputted by the electric actuator 6 to the linear stroke in the axial direction of the sewer hole 31.

As shown in FIG. 6 , a penetrating connecting hole 21 is formed in a side wall at one end where the sewer pipe 2 is connected with the upper pressing part 3. The connecting part 8 is located in the connecting hole 21, the transmission part 5 is connected to one end of an inner side of the connecting part 8, and the electric actuator 6 is connected to one end of an outer side of the connecting part 8.

A transmission channel 22 used for accommodating the transmission part 5 is further arranged in the sewer pipe 2, and the transmission channel 22 communicates with the connecting hole 21. The transmission part 5 slides in the transmission channel 22 in an axial direction and is hermetically connected with an inner wall of the transmission channel 22 through a sliding sealing ring 51.

Hence, according to the automatic draining device of the embodiment of the present disclosure, the device uses an electric device to drive the piston part I to slide in the sewer hole 31, so that automatic sewer of the washbasin is achieved. The user only needs to start the electric device through the switch to drain out accumulated water in the washbasin after using the washbasin and needing to drain the water, there is no need to reach the hand into the accumulated water to press the piston at a drain outlet, and therefore, it is more convenient and healthier.

The transmission part 5 is in a rod shape.

Further, in the present embodiment, the electric actuator 6 is an electromagnetic push rod, and the stroke outputting part 61 is a push rod. In conjunction with FIG. 7 , the push rod is arranged in a coil former 62 in a penetrating mode. An electromagnetic coil 63 is wound on the coil former 62. The electromagnetic coil 63 is connected with the power supply management unit 72 and the power supply 71 through a wire 631.

The push rod is a ferro-magnet, the electromagnetic coil 63 generates a magnetic force after being electrified, and then drives the push rod to slide in the coil former 62 in the axial direction. A permanent magnet 65 is further fixed to the push rod. The permanent magnet 65 is further provided with metal plates 66 on two sides of the push rod in a sliding direction respectively. The metal plates are located at two ends of the stroke corresponding to the permanent magnet 65.

When the push rod slides, the permanent magnet 65 fixed to the push rod slides between the two metal plates 66. When the push rod operates to the two ends of the stroke, the permanent magnet 65 is absorbed and fixed by the metal plate 66 on the corresponding side, and then a stroke position state of the push rod is locked.

In the present embodiment, the permanent magnet 65 is fixed to the push rod. In some other embodiments, an installation mode of fixing the metal plates 66 to the push rod may further be adopted.

The electromagnetic push rod is further provided with a reset spring 64. The push rod is arranged in the reset spring 64 in a penetrating mode. In the present embodiment, one end of the reset spring 64 is fixedly connected with the push rod, and other end is connected with the coil former 62. In some other embodiments, one end of the reset spring 64 is fixedly connected with the push rod, and other end may further be connected with a shell of the electromagnetic push rod.

Hence, the automatic draining device uses one electromagnetic push rod to drive the piston part 1 to slide in the sewer hole 31, so that automatic sewer of the washbasin is achieved. The user only needs to start the electric device through the switch to drain out the accumulated water in the washbasin after using the washbasin and needing to drain the water, there is no need to reach the hand into the accumulated water to press the piston at the drain outlet, and therefore, it is more convenient and healthier.

Embodiment 2

In conjunction with FIG. 8 -FIG. 10 , the structure and principle of the present embodiment are roughly the same as that of Embodiment 1, the same place will not be detailed, differences lie in that an electric actuator 6 is an electric screw rod mechanism, and a stroke outputting part 61 is a screw rod. The screw rod 61 has an outer thread. The screw rod is connected with a transmission part 5 through a thread.

A power supply component 7 is used for providing a working current for the electric screw rod mechanism 6, the electric screw rod mechanism 6 enables the screw rod to rotate under the drive of the current, the screw rod generates a working stroke through thread engagement during rotating and outputs the working stroke to the transmission part 5, and a piston 1 connected with the transmission part 5 slides in a sewer hole 31 along with the working stroke.

In the present embodiment, the screw rod is connected with the transmission part 5 through the connecting part 8, and the connecting part 8 is provided with a thread matched with the outer thread of the screw rod.

In the present embodiment, the electric screw rod mechanism 6 is fixedly connected with the outer side wall of a sewer pipe 2.

A power supply management unit 72 is connected with a power supply 71 for controlling turning on and turning off and positive and negative working states of the electric screw rod mechanism 6 for managing the current outputted by the power supply 71, and then controlling opening and closing states of the sewer hole 31.

Specifically, the screw rod may be rotated forwards or reversely by changing a direction of the current driving the electric screw rod mechanism 6, so that the piston part I slides upwards or downwards through the transmission part 5.

The connecting part 8 is simultaneously connected with the electric screw rod mechanism 6 and the transmission part 5, and converts the working stroke outputted by the electric screw rod mechanism 6 into a linear stroke in the axial direction of the sewer hole 31. The connecting part 8 is located in the connecting hole 21, the transmission part 5 is connected to one end of an inner side of the connecting part 8, and the electric screw rod mechanism 6 is connected to one end of an outer side of the connecting part 8.

Hence, the automatic draining device uses one electric screw rod mechanism to drive the piston part 1 to slide in the sewer hole 31, so that automatic drainage of the washbasin is achieved. The user only needs to start the electric device through the switch to drain out the accumulated water in the washbasin after using the washbasin and needing to drain the water, there is no need to reach the hand into the accumulated water to press the piston at a drain outlet, and therefore, it is more convenient and healthier.

Embodiment 3

In conjunction with FIG. 11 , the structure and principle of the present embodiment are roughly the same as that of Embodiment 2, the same place will not be detailed, differences lie in that a gear 611 is fixed to a screw rod, and the gear 611 meshes with a rack 51 arranged on a transmission part 5.

An electric screw rod mechanism 6 enables the screw rod to rotate under the drive of a current, when the screw rod drives the gear 611 to rotate, a working stroke is generated through thread engagement of the gear 611 and the rack 51 and outputted to the transmission part 5, and the piston part 1 connected with the transmission part 5 slides in the sewer hole 31 along with the working stroke.

The screw rod may be rotated forwards or reversely by changing the direction of the current driving the electric screw rod mechanism 6, so that the piston part 1 slides upwards or downwards through the transmission part 5.

The piston part 1 slides to the bottom end of the stroke, enters the sewer hole 31 and completely seals the sewer hole 31, the sewer hole 31 is opened after the piston part 1 slides away from the bottom end of the stroke, and water in the washbasin enters the sewer pipe 2 through the sewer hole 31 and is drained out.

Embodiment 4

In conjunction with FIG. 12 to FIG. 15 , the structure and principle of the present embodiment are roughly the same as that of Embodiment 1, the same place will not be detailed, differences lie in that an electric actuator is a motor 7, a stroke outputting part is a worm 11, and a connecting part is a thumb wheel mechanism 8.

The power supply component 6 is used for providing a working current for the motor 7, the motor 7 enables the thumb wheel mechanism S to rotate under the drive of the current, the thumb wheel mechanism 8 generates a working stroke during rotating and outputs the working stroke to the transmission part 5, the piston part 2 connected with the transmission part 5 slides in the sewer hole 4 along with the working stroke, the piston part 2 slides to a bottom end of the stroke, enters the sewer hole 4 and completely seals the sewer hole 4, the sewer hole 4 is opened after the piston part 2 slides away from the bottom end of the stroke, and water in the washbasin enters the sewer pipe 1 through the sewer hole 4 and is drained out.

Further, the thumb wheel mechanism 8 includes a thumb wheel Si and a shifting tooth part 83 fixed to the transmission part 5, one side of the thumb wheel 81 meshes with the worm 11, the other side in an axial direction of the thumb wheel 81 has at least one protrusion portion 82, the shifting tooth part 83 has a shifting tooth 84 matched with the protrusion portion, and when the protrusion portion 82 rotates under the drive of the motor 7, the protrusion portion 82 is in touch with the shifting tooth 84 from one side and pushes the shifting tooth 84 to move upwards or downwards, and the motor 7 forwards or reversely drives the protrusion portion 82 to rotate, so that the shifting tooth 84 is pushed to move upwards or downwards.

The above piston part 2 linearly slides in the sewer hole 4 in the axial direction, and the tooth turning part 83 converts a working stroke outputted by the motor 7 into a linear stroke in the axial direction of the sewer hole 4 through the transmission part 5. The motor 7 is installed with a driving gear 10, the thumb wheel mechanism S has a worm gear 9, the worm 11 has a driven gear, the driving gear 10 meshes with the driven gear, and the worm 11 meshes with the worm gear 9, Hence, the motor 7 forward or reversely drives the protrusion portion to rotate, so as to push the shifting tooth 84 to move upwards or downwards.

A penetrating transmission hole 21 is formed in a side wall at one end where the above sewer pipe 1 is connected with the upper pressing part 3. The transmission part 5 slides in the transmission hole 12 in the axial direction and is hermetically connected with an inner wall of the transmission hole 12, the piston part 2 is connected to one end of an inner side of the transmission part 5, and the thumb wheel mechanism 8 is connected to one end of an outer side of the transmission part 5.

The above power supply component 6 includes a power supply and a power supply management unit, the power supply management unit is connected with the power supply, the power supply management unit controls the working state of the motor 7 for managing a current outputted by the power supply, and then controls opening and closing states of the sewer hole 4. The power supply management unit has a control switch, the control switch controls the working state of the power supply management unit, and the control switch is a hand switch or an inductive switch.

Hence, according to the automatic draining device of the embodiment of the present disclosure, the motor 7 enables the thumb wheel mechanism 8 to rotate under the drive of the current, the thumb wheel mechanism 8 generates a working stroke during rotating and outputs the working stroke to the transmission part 5, the piston part 2 connected with the transmission part 5 slides in the sewer hole 4 along with the working stroke, the piston part 2 slides to a bottom end of the stroke, enters the sewer hole 4 and completely seals the sewer hole 4, the sewer hole 4 is opened after the piston part 2 slides away from the bottom end of the stroke, and water in the washbasin enters the sewer pipe 1 through the sewer hole 4 and is drained out. The user only needs to control the opening and closing states of the sewer hole by controlling through the control switch after using the washbasin and needing drainage, so that accumulated water in the washbasin can be drained, there is no need to reach the hand into the accumulated water to press the piston at the water outlet, and use is convenient and healthy.

In the description of the present disclosure, it should be understood that an orientation and position relationship indicated by terms “center”, “longitudinal”, “horizontal”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”“outer”, “clockwise”, “anticlockwise” and the like is an orientation and position relationship shown based on the accompanying drawings, which is only used for facilitating describing the present disclosure and simplifying the description, not indicating or hinting that a referred device or element must have a specific orientation and are constructed and operated in a specific orientation, thereby not being understood as the limitation on the present disclosure.

In addition, terms “first” and “second” are only for the purpose of describing, and cannot be understood as indicating or hinting relative importance or as implicitly indicating the quantity of technical features indicated. Hence, features defined as “first” or “second” may explicitly or implicitly include one or more such features. In the description of the present disclosure, “a plurality of” means two or more than two, unless otherwise expressly specified.

In the present disclosure, unless otherwise expressly specified and limited, the terms “install”, “link”, “connect”, “fix” etc. shall be constructed broadly, for example, may be a fixed connection, may also be a detachable connection, or integrated; may be a mechanical connection, may also be an electric connection; may be a direct connection, may also be an indirect connection through an intermediation, and may be an internal communication of two elements or an interaction relationship of two elements. For ordinary skilled in the art, specific meaning of the above terms in the present disclosure may be understood according to specific conditions.

In the present disclosure, unless otherwise expressly stated and limited, a first feature being “preceding” or “after” a second feature may include that the first feature is in direct touch with the second feature, and may also include that the first feature is not in direct touch with the second feature but in touch through other features between them. In addition, the first feature being above, at the top of and on the second feature includes that the first feature is above and at the inclined top of the second feature, or only means that a level height of the first feature is higher than that of the second feature. The first feature being under, below and at the bottom of the second feature includes that the first feature is under and at the inclined bottom of the second feature, or only means that the level height of the first feature is less than that of the second feature.

In the description of the specification, the description of the reference terms “an embodiment”, “some embodiments”, “an example”, “a specific example” or “some examples” etc. means that specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the present disclosure. In the present specification, schematic representations of the above terms should not be understood as necessarily referring to the same embodiment or example. In addition, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, the skilled in the art may joint and combine different embodiments or examples described in the specification.

Although the embodiments of the present disclosure have been described above, it may be understood that the above embodiments are schematic, cannot be understood as limitations on the present disclosure, and those ordinary skilled in the art can make changes, modifications, replacements and deformations on the above embodiments within the scope of the present disclosure. 

What is claimed is:
 1. An automatic draining device, comprising: a sewer pipe having a thread on an outer side wall of one end, one end of the sewer pipe being connected with an upper pressing part through the thread, the upper pressing part being arranged in a water outlet of a washbasin and being hermetically connected with the water outlet of the washbasin, the upper pressing part having a sewer hole communicating with the sewer pipe, a piston part being arranged in the sewer hole, the piston part being movably connected with an inner wall of the sewer hole, the piston part being connected with a transmission part, an electric actuator being further arranged outside the sewer pipe, the electric actuator being connected with a power supply component, the electric actuator having a stroke outputting part, the stroke outputting part being connected with the transmission part through a connecting part, the power supply component being used for providing a working current for the electric actuator, the electric actuator working under a drive of the working current and outputting a working stroke through the stroke outputting part, the working stroke being further outputted to the transmission part through the connecting part, the piston part connected with the transmission part sliding in the sewer hole along with the working stroke, the piston part siding to a bottom end of the working stroke, entering the sewer hole, and completely sealing the sewer hole, the sewer hole being opened after the piston part slides away from the bottom end of the working stroke, and water in the washbasin entering the sewer pipe through the sewer hole and being drained out.
 2. The automatic draining device according to claim 1, wherein the piston part linearly slides in the sewer hole in an axial direction.
 3. The automatic draining device according to claim 2, wherein the connecting part is simultaneously connected with the stroke outputting part and the transmission part, and the connecting part converts the working stroke outputted by the stroke outputting part into a linear stroke in the axial direction of the sewer hole.
 4. The automatic draining device according to claim 1, wherein a penetrating connecting hole is formed in a side wall at one end where the sewer pipe is connected with an upper pressing plate, the connecting part is located in the penetrating connecting hole, the transmission part is connected to one end of an inner side of the connecting part, and the stroke outputting part is connected to one end of an outer side of the connecting part.
 5. The automatic draining device according to claim 4, wherein a transmission channel used for accommodating the transmission part is further arranged in the sewer pipe, the transmission channel communicates with the penetrating connecting hole, and the transmission part slides in the transmission channel in an axial direction and is hermetically connected with an inner wall of the transmission channel.
 6. The automatic draining device according to claim 1, wherein the power supply component comprises a power supply and a power supply management unit, wherein the power supply management unit is connected with the power supply, the power supply management unit manages a current outputted by the power supply to control a working state of an electromagnetic push rod, and then control opening and closing states of the sewer hole.
 7. The automatic draining device according to claim 6, wherein the power supply management unit has a control switch, and the control switch controls a working state of the power supply management unit.
 8. The automatic draining device according to claim 1, wherein the electric actuator is an electric screw rod mechanism or an electromagnetic push rod or a motor; when the electric actuator is the electric screw rod mechanism, the stroke outputting part is a screw rod; when the electric actuator is the electromagnetic push rod, the stroke outputting part is a push rod; and when the electric actuator is the motor, the stroke outputting part is a worm.
 9. The automatic draining device according to claim 8, wherein when the electric actuator is the electric screw rod mechanism, a gear is fixed to the screw rod, and the gear meshes with a rack arranged on the transmission part.
 10. The automatic draining device according to claim 8, wherein when the electric actuator is the electromagnetic push rod, the push rod is arranged in a coil former in a penetrating mode, an electromagnetic coil is wound on the coil former, the electromagnetic coil is connected with the power supply component through a wire, and the electromagnetic coil generates a magnetic force after being electrified, and then drives the push rod to slide in the coil former in an axial direction.
 11. The automatic draining device according to claim 10, wherein a permanent magnet is further fixed to the push rod, the permanent magnet is further provided with two metal plates on two sides of the push rod in a sliding direction respectively, the two metal plates are located at two ends of the stroke corresponding to the permanent magnet, and when the push rod slides, the permanent magnet fixed to the push rod slides between the two metal plates.
 12. The automatic draining device according to claim 10, wherein the electromagnetic push rod is further provided with a reset spring, and the push rod is arranged in the reset spring in the penetrating mode.
 13. The automatic draining device according to claim 8, wherein when the electric actuator is the motor, the connecting part is a thumb wheel mechanism.
 14. The automatic draining device according to claim 13, wherein the thumb wheel mechanism comprises a thumb wheel and a shifting tooth part fixed to the transmission part, wherein a first side of the thumb wheel meshes with the worm, a second side in an axial direction of the thumb wheel has at least one protrusion portion, the shifting tooth part has a shifting tooth matched with the at least one protrusion portion, and when the at least one protrusion portion rotates under a drive of the motor, the at least one protrusion portion is in touch with the shifting tooth from one side and pushes the shifting tooth to move upwards or downwards.
 15. The automatic draining device according to claim 14, wherein the motor forward or reversely drives the worm to drive the at least one protrusion portion to rotate, so as to push the shifting tooth to move upwards or downwards.
 16. The automatic draining device according to claim 14, wherein the motor is installed with a driving gear, the thumb wheel mechanism has a worm gear, the worm has a driven gear, the driving gear meshes with the driven gear, and the worm meshes with the worm gear. 